[PATCH v14 22/22] KVM: selftests: Add TDX lifecycle test

[Lisa Wang <wyihan@google.com>]

From: Sagi Shahar <sagis@google.com>

Adding a test to verify TDX lifecycle by creating a simple TDX VM.

Signed-off-by: Sagi Shahar <sagis@google.com>
Signed-off-by: Lisa Wang <wyihan@google.com>
---
 tools/testing/selftests/kvm/Makefile.kvm           |  1 +
 .../testing/selftests/kvm/include/x86/processor.h  |  1 +
 .../selftests/kvm/include/x86/tdx/tdx_util.h       |  5 ++++
 tools/testing/selftests/kvm/x86/tdx_vm_test.c      | 33 ++++++++++++++++++++++
 4 files changed, 40 insertions(+)

diff --git a/tools/testing/selftests/kvm/Makefile.kvm b/tools/testing/selftests/kvm/Makefile.kvm
index 28b33ed8c2e6..3561f9284e6f 100644
--- a/tools/testing/selftests/kvm/Makefile.kvm
+++ b/tools/testing/selftests/kvm/Makefile.kvm
@@ -167,6 +167,7 @@ TEST_GEN_PROGS_x86 += rseq_test
 TEST_GEN_PROGS_x86 += steal_time
 TEST_GEN_PROGS_x86 += system_counter_offset_test
 TEST_GEN_PROGS_x86 += pre_fault_memory_test
+TEST_GEN_PROGS_x86 += x86/tdx_vm_test
 
 # Compiled outputs used by test targets
 TEST_GEN_PROGS_EXTENDED_x86 += x86/nx_huge_pages_test
diff --git a/tools/testing/selftests/kvm/include/x86/processor.h b/tools/testing/selftests/kvm/include/x86/processor.h
index ff3219edab44..fa112a1c1c84 100644
--- a/tools/testing/selftests/kvm/include/x86/processor.h
+++ b/tools/testing/selftests/kvm/include/x86/processor.h
@@ -372,6 +372,7 @@ static inline unsigned int x86_model(unsigned int eax)
 #define VM_SHAPE_SEV		VM_TYPE(KVM_X86_SEV_VM)
 #define VM_SHAPE_SEV_ES		VM_TYPE(KVM_X86_SEV_ES_VM)
 #define VM_SHAPE_SNP		VM_TYPE(KVM_X86_SNP_VM)
+#define VM_SHAPE_TDX		VM_TYPE(KVM_X86_TDX_VM)
 
 #define PHYSICAL_PAGE_MASK      GENMASK_ULL(51, 12)
 
diff --git a/tools/testing/selftests/kvm/include/x86/tdx/tdx_util.h b/tools/testing/selftests/kvm/include/x86/tdx/tdx_util.h
index 35f0b2b7ac40..9a882644a48d 100644
--- a/tools/testing/selftests/kvm/include/x86/tdx/tdx_util.h
+++ b/tools/testing/selftests/kvm/include/x86/tdx/tdx_util.h
@@ -11,6 +11,11 @@ static inline bool is_tdx_vm(struct kvm_vm *vm)
 	return vm->type == KVM_X86_TDX_VM;
 }
 
+static inline bool is_tdx_supported(void)
+{
+	return !!(kvm_check_cap(KVM_CAP_VM_TYPES) & BIT(KVM_X86_TDX_VM));
+}
+
 /*
  * TDX ioctls
  * Use underscores to avoid collisions with struct member names.
diff --git a/tools/testing/selftests/kvm/x86/tdx_vm_test.c b/tools/testing/selftests/kvm/x86/tdx_vm_test.c
new file mode 100644
index 000000000000..7cdcaf33b585
--- /dev/null
+++ b/tools/testing/selftests/kvm/x86/tdx_vm_test.c
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include "processor.h"
+#include "kvm_util.h"
+#include "tdx/tdx_util.h"
+#include "ucall_common.h"
+#include "kselftest_harness.h"
+
+static void guest_code_lifecycle(void)
+{
+	GUEST_DONE();
+}
+
+TEST(verify_td_lifecycle)
+{
+	struct kvm_vcpu *vcpu;
+	struct kvm_vm *vm;
+	struct ucall uc;
+
+	vm = vm_create_shape_with_one_vcpu(VM_SHAPE_TDX, &vcpu,
+					   guest_code_lifecycle);
+
+	vcpu_run(vcpu);
+	TEST_ASSERT_EQ(get_ucall(vcpu, &uc), UCALL_DONE);
+
+	kvm_vm_free(vm);
+}
+
+int main(int argc, char **argv)
+{
+	TEST_REQUIRE(is_tdx_supported());
+	return test_harness_run(argc, argv);
+}

-- 
2.55.0.229.g6434b31f56-goog